The Boost Society·Construction / Real Estate·Levallois-Perret, France·Founded 2014·Last verified 25 July 2026
27
out of 100
Significant gapsPending ReviewMixed evidence· 8 src

The Boost Society operates mid-sized student housing across France with no emissions data, no decarbonisation targets, and no renewable energy strategy. Portfolio expanding rapidly to 20,000 residents by 2030 without any climate commitment. Transparency limited to vague CSR messaging; no formal accountability structure.

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The calculation

Every score shows its working.

Same formula for every company. No curve. No private weighting.

SINK = (0.3 × Base + 0.7 × Performance) × Scale
Industry base impact
Construction / Real Estate sector ceiling.
35 / 100
Performance score
Sum of the 10 rubric questions, scored 0–10 each.
24 / 100
Raw score
Weighted average before scale penalty.
(0.3 × 35) + (0.7 × 24) = 27.3
Scale penalty
Multiplier based on absolute emissions volume — physics-first.
× 1
Final score
Rounded. Significant gaps.
27 / 100
The ten questions

Where The Boost Society is strong, and where it isn't.

Strongest on Controversies & Red Flags and Nature & Biodiversity Impact (8/10, 3/10). Weakest on Targets & Commitments and Emissions Trajectory (0/10, 1/10).

Where the evidence comes from

Every document used, listed.

8 sources used in this assessment. All publicly available. Each row shows which rubric questions it informed.

[1]Self-reported
KLEY CSR Initiatives

Thermal insulation meeting the high standards of RT 2012-20, an intelligent lighting system with presence detectors

Ongoing
Q1Q4Q6Q7
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[2]Self-reported
The Boost Society — The Group Overview

The Boost Society is currently home to 10,000 young people across nearly 40 residences

Ongoing
Q1Q3Q8Q10
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[3]Public record
Verif.com — KLEY SIREN 803724699 Registry

The Boost Society (ex-KLEY) student-residence operator; holding-entity accounts, group ~10,000 beds

Ongoing
Q1
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[4]Public record
Hospitality On — Boost Society, HIFE and KLEY Maturing

investment capacity of more than €1.3 billion and a pipeline of more than 16,000 beds

Unknown
Q2Q3
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[5]Public record
Hospitality On — Saint-Ouen Residence Development

La résidence KLEY Saint-Ouen sera située au cœur d'un écoquartier de 100 hectares

Unknown
Q5
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[6]Public record
Hospitality On — Portfolio Expansion Coverage

The Boost Society accueille désormais 7 500 jeunes dans près de 30 résidences

Unknown
Q3
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[7]Self-reported
The Boost Society — RSE Engagements

Découvrez les engagements RSE de The Boost Society pour offrir des lieux de vie durables

Ongoing
Q9
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[8]Public record
Societe.com — The Boost Society SIREN 803724699

THE BOOST SOCIETY (SIREN 803724699, ex-KLEY): chiffre d'affaires 7 387 951 EUR (2023), effectif 50, creee 2014, Levallois-Perret

Ongoing
Q9
View →

If you believe a source has been misread or a newer version exists, submit a challenge.

The Boost Society in context

The Boost Society sits at the bottom of the construction / real estate pack.

Among the 14 major construction / real estate brands we've scored, The Boost Society sits 14th of 14.

14/14
The Boost Society's rank
38
Industry average
27
Industry low
60
Industry high
How this score has moved

The Boost Society's score over time.

today

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What's being contested

This score is not currently being contested.

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No challenges submitted yet. If you have evidence that contradicts this score, you can challenge any question above — cite a public source and we'll review it.

About The Boost Society

The Boost Society is a French student housing operator and developer managing approximately 40 residential buildings housing ~10,000 people, with a portfolio expansion pipeline targeting 20,000 residents by 2030. The group acquires properties via VEFA (off-plan purchase) and operates mixed-use residential assets across France. Founded in the mid-2010s, it is a mid-market player in European purpose-built student accommodation.

Founded
2014
Headquarters
Levallois-Perret, France
Employees
~50 (holding entity)
Annual revenue
€7.4M (FY2023, holding entity; group AUM ~€1.3B)
Company website ↗
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